Based on the heroic movie, Power-Man and Big Chin: Superstars! When a boulder is being planned to roll to Hero-Land by a villain who wants to claim the ownership of it, the casual citizens who are living their lives help out those in Hero-Land and call the Hero-Land community about it. Power-Man and Big Chin answer the heroic phone and notify the other heroes, and all of them are going to try their best to save the day. Will they protect their community in time with no scratch in sight, or will it end up being rolled to Hero-Land and then every villain would gain ownership of Hero-Land? Find out in this story, and watch that boulder roll or stay away, I say!